/*
 * The contents of this web application are subject to the Mozilla Public License Version 
 * 1.1 (the "License"); you may not use this web application except in compliance with 
 * the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/.
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
 * for the specific language governing rights and limitations under the License.
 * 
 * The Original Code is owned by and the Initial Developer of the Original Code is 
 * Composite A/S (Danish business reg.no. 21744409). All Rights Reserved
 * 
 * Section 11 of the License is EXPRESSLY amended to include a provision stating 
 * that any dispute, including but not limited to disputes related to the enforcement 
 * of the License, to which Composite A/S as owner of the Original Code, as Initial 
 * Developer or in any other role, becomes a part to shall be governed by Danish law 
 * and be initiated before the Copenhagen City Court ("K�benhavns Byret")            
 */

using System.Threading.Tasks;
using System.Web;
using Composite.C1Console.Events;

namespace Composite.Core.WebClient.Renderings
{
    /// <exclude />
    public static class FunctionPreview
    {
        private const string RenderingMode = "function";

        static FunctionPreview()
        {
            GlobalEventSystemFacade.OnDesignChange += () => BrowserRender.ClearCache(RenderingMode);
        }

        internal static async Task<string> GetPreviewFunctionPreviewImageFile(HttpContext context)
        {
            string previewUrl = context.Request.Url.ToString().Replace("/FunctionBox?", "/FunctionPreview.ashx?");

            var renderingResult = await BrowserRender.RenderUrlAsync(context, previewUrl, RenderingMode);

            if (renderingResult == null)
            {
                return null;
            }

            if (renderingResult.Status == BrowserRender.RenderingResultStatus.Success)
            {
                return renderingResult.FilePath;
            }

            if (renderingResult.Status >= BrowserRender.RenderingResultStatus.Error)
            {
                Log.LogWarning("FunctionPreview", "Failed to build preview for function. Reason: {0}; Output:\r\n{1}", 
                    renderingResult.Status, renderingResult.Output);
            }
            return null;
        }

        /// <exclude />
        public static int GetFunctionPreviewHash()
        {
            return BrowserRender.GetLastCacheUpdateTime(RenderingMode).GetHashCode();
        }
    }
}
